Abstract: A vehicle speed control system can be activated so as to control the vehicle speed in a modified way in response to the driver's inputs. When activated, the accelerator 30 position defines a target speed and the speed controller 22 controls both the engine 34, via and engine control unit 36 and the brakes 14, 16, via a hydraulic brake control unit 20 so as to control the vehicle speed to the target speed. The acceleration of the vehicle is also controlled according to the difference between the present vehicle speed and the present target speed.

Abstract: An automatic brake control system for a vehicle in which the brakes, are controlled by a control unit to limit vehicle speed to a target speed when descending a hill. The control unit is arranged to control the vehicle speed so that, as the vehicle speed approaches the target speed, the rate of change of acceleration of the vehicle does not exceed a predetermined value.